Method of and means for applying pins to flexible brush backs and the like



Aug. 2,1938. J. MORRISON 2,125,735

METHOD OF AND MEANS FOR APPLYING PIN S TO FLEXIBLE BRUSH BACKS AND THE LIKE Filed July 24, 1937 2 Shee'ts-Sheet l I I I l Aug. 2, 1938. J. MORRISON METHOD OF AND MEANS FOR APPLYING PI NS TO FLEXIBLE BRUSH BACKS AND THE LIKE Filed July 24, 1937 2 Sheets-Sheet 2 pin brushes.

Patented Aug. 2, 1938 p;

outrun STATES PATENT OFFICE METHOD OF AND MEANS FOR APPLYING PINS T FLEXIBLE BRUSH BACKS AND THE LIKE John Morrison, Mamaroneck, N. Y., assignor to 0x Fibre Brush Company, Inc., New York, N. Y., a corporation of Delaware Application July 24, 1937, Serial No. 155,499 17 Claims. (01. soc-#21) This invention relatesto a method of and means for applying headed pins to a flexible backing, especially, though not exclusively, a rubber backing of the kind used in the manufacture of The principal object of my invention is to mount in flexible backing material in a simple and efficient manner a multiplicity of pins which are accurately arranged in spaced relation throughout an area of determined size and con-f, tour in conformity with'the requirements of a brush head, for example, to which the pinstudded back is to be applied. An exemplifying form of the invention in its adaptation to the manufacture of pin-studded elastic backs for brush heads, is herein shown and described, the scope of the invention being expressed in the appended claims.

In the drawings- Figure 1 is a sectional elevation of a brush pin applying apparatus embodying the principle of my invention.

, Fig. 2 is a similar elevation showing an inverted. pin assembly plate positioned on the apparatus, the pins being free of the assemblyplate and supported, heads downward, on a base block included in the apparatus, the shanks of the pins being freely sustained in vertical position by an upper guide structure and the initial .position of the pins in the assembly plate being indicated by dotted lines.

Fig. 3 is a similar elevation showing flexible backing material substituted for the pin-freed assembly plate.

Fig. 4 is a similar elevation showing the verti-. cally supported pins temporarily clamped in the guide structure and showing also a foraminated pin-shank receiving element imposed on the flexible backing.

Fig.5 is a similar elevation showing the assembled elements of Fig. 4 as inverted, the base block being partially pressed down upon the pin heads, and the points of the pins entered in-the opposing surface of the backing material.

Fig. 6 is a-similar elevation showing astripper element mounted and arranged to bear on the backing material, the pin shanks being indicated as released in, the guide structure, and the base block as partially raised.

Fig. 7 is a longitudinal vertical section of the inverted pin shank receiving element as removed and supporting the backing and its associated brush pins, showing the pinsas pressed through,

the backing and indicating by dotted linesthe previous position of the pins inthe backing.

1 or approvedmanner.

Fig. 8 -is a view of the recessed or chambered side of the-pin shank receiving element.

Fig. 9' is a plan view of the apparatus with the -flexible-backing imposed thereon as shown in Fig. 3. l; Fig. 10 i S a "p lSp@CtiV(-) view ofthe apparatus asshown inFigLL- Fig llisa "similar view of thz'epin-filled assemblyplate preparatory to-its'placement on the appar us I l In carrying out my invention in the form i1- lustrated the usual headed pins are inserted in and suspendedthroughout the perforated area iii of an assemblyplate [1, which area ordinarily corresponds in contour with that of the brush head to which the rubber-back l8 (when studded with pins) is adapted to be applied in any usual The plate I! with its pin assembly is placed in inverted position, pin heads-downward, "upon asimilarly perforated plate structure, as'indicated in Fig. 2, "the perforations- H] of whichstructure are large enough in] cross-section for thefree passage of the heads of thepins when theassembly -is in horizontal position. This structure comprises a top plate 2|] and a bottom plate 2-! in fixed spaced relation, together with a longitudinally slidable interposed' plate 22 having at one end .a projecting handleZB. The "associated plates have corre spo'ndingly perforated areas, the perforations of the topand bottom-'platesbeing infixed vertical alignment, and-those ofthe slide plate being movable into and-outof axial'alignment with the other perforations. The top and bottom plates are conveniently connected by means, for example, of screws 24 which pass freely through suitably located slots 25 in the slide plate 22. The top plate 20 is provided adjacent one of its longitudinal'edge swithshort upstanding studs 26 which mate with corresponding holes 21 in thefassemblyplate l1 and are properly positioned to maintain the perforations 0f the latter in registrywith the perforations of the top plate 20. Under the'bottom plate 2i is a base block 28 having adjacent its ends vertical guide open ings 29 for pins 30 secured to" and depending from the bottom plate 2| which guide means insures the parallel relation oftheplate structure and base block. Such structure is maintained norm-all spacedfrom the base blockby compression springs 3| whichare suitably interposed betweenthe block and th e'adjacent plate 2 I Preparatory-to placing the pin-filled'plate l1 flatwise upon' the guide plate 20, -the intermediateplateZZ is disposed to bring itsperforations into axial alignment with those of the plates 20 and 2|. Consequently the group of pins gravitates, heads downward, through the perforations of the associated plates 20, 2| and 22, the heads of the pins resting uniformly upon the base 28 and their upstanding ends lying just below the upper surface of the plate 23, as seen in Fig. 2. The slide plate 22 by actuation of its handle 23 is then slightly moved longitudinally, thus pinching and holding the pins of the group in spaced parallel relation againstthe walls of their respective perforations in the plates 20 and 2|, as seen in Fig. 4;' The assembly plate I! free of the pins I is then removed, and the rubber back I3 is placed upon the plate 20 over the assembled pins IS, the edge of the back abutting and being centralized by upstanding studs 26 on the latter, as seen in Fig. 3.

A pin shank receiving element comprising in the present instance a plate 32 having a perforated area 33 corresponding with that of the assembly plate and also having a recess or chamber 34 in its upper surface is next placed upon the rubber back, as seen in Fig. 4, the plate 32 being accurately positioned by the upstanding studs 26 on the plate 2|] mating with suitably-disposed holes 35 in the plate 32 and also by additional end studs 36 on the plate 2|) mating with end holes 31 in the plate 32. Vertical pressure is then applied to the plate 32 in a manner to depress the rubber back I8 and the plate structure 20, 2|, 22 against the force of the springs 3|, thus entering the points of the groups of pins in the opposing surface of the back; it being noted that there is not suflicient friction or pressure brought to bear on the pins by the plate 22 to prevent the free passage of the pins to the extent of entering the rubber back. The assembled elements are inverted, as seen in Fig. 5, and the plate 32, recessed surface downward, is supported upon a suitable table or bed. Upon the removal of the applied pressure the block 28 is raised by the recoil of the springs 3|. A stripper member consisting, in the present instance of a plate 38 with legs 39 is applied to the device and forced downward,

the legs being entered in suitably-disposed guide holes 40 in the block 28 and the associated perforated plates so as to bear at intervals against the opposing margin of the rubber back I8, thus separating such back from the surface of the pin guide plate 2| to which it adheres and holding the back flatwise against the upper surface of the pin shank receiving element 32. While the back is held in this way the slide plate is shifted to release the group of pins and the plate structure 20, 2|, 22 is lifted as seen in Fig. 6, the legs 39 remaining upon the backing material until the structure clears the brush pins. This done, the plate structure, together with the associated stripper is removed, the backing material l8 with the pins therein in spaced parallel relation, heads upward, remaining upon the element 32, as indicated in Fig. 7. The pins l5 are then simultaneously pressed through and beyond the rubber back and through the perforations 33 into the chamber of the member 32 by means, for example, of any flat faced element which bears uniformly upon the heads of the group of pins, thus completing the pin-applying operation. The pin-studded elastic back thusrproduced is then removed fromthe element 32 and the hereinbefore described operation is repeated in connection with the succeeding rubber backs and pin groups therefor.

It is to be understood that the exemplifying method and means herein disclosed may be varied and modified within the fair spirit of the invention and the scope of the appended claims.

I claim:

1. In a method of applying pins to flexible backing material, the steps of placing a group of pins, heads down, in the perforated area of a pin guiding element whereof each perforation is of sufiicient size in cross-section for the free passage of the head of a pin; supporting the heads of the said pins upon a base element; temporarily securing the pins in the respective perforations of the guiding element; placing backing material upon the said guiding element and above the pins; placing a pin-shank receiving element upon the said backing material; and effecting opposing relative movement between the pin-shank receiving element and the heads of the group of pins in a manner to enter the pins in spaced parallel relation in the opposing surface of the backing material.

2. In a method of applying pins to flexible backing material, the steps of placing a group of pins, heads down, in the perforated area of a pin guiding element whereof each perforation is of suflicient size in cross-section for the free passage of the head of a pin; supporting the heads of the said pins upon a base element; temporarily securing the pins in the respective perforations of the guiding element; placing backing material upon the said guiding element and above the pins; placing a pin-shank receiving element upon the said backing material; effecting opposing relative movement between the pin-shank receiving element and the heads of the group of pins in a manner to enter the pins in spaced parallel relation in the opposing surface of the backing material; shifting the pin-shank receiving element and the guiding element in spaced relation, and stripping from the guiding element the backing material carrying the pins.

3. In a method of applying pins to flexible backing material, the steps of placing a group of pins, heads down, in the perforated area of a pin guiding element whereof each perforation is of sufiicient size in cross-section for the free passage of the head of a pin; supporting the heads of the said pins upon a base element; temporarily securing the pins in the respective perforations of the guiding element; placing backing material upon the said guiding element and above the pins; placing a pin-shank receiving element upon the said backing material; effecting opposing relative movement between the pin-shank receiving element and the heads of the group of pins in a manner to enter the pins in spaced parallel relation in the opposing surface of the backing material; shifting the pin-shank receiving element and the guiding element to spaced relation; stripping from the guiding element the backing material carrying the pins; removing the pin-shank receiving element and the opposed backing mate rial and pins, and pressing the pins simultaneously through the backing material until the pin heads abut the backing material.

4. In a method of applying pins to flexible backing material, the steps of freely suspending a group of headed pins in the perforated area of a pin assembling element; placing the said element in inverted position, pin heads down, upon the correspondingly perforated area of a pin guiding element whereof the perforations are in axial alignment, or substantially so, with those of the assembling element and whereof each perforation is of sufficient size in cross-section for the free passage of the head of a pin; supporting rations of the guiding element; removing. the assembling element free of the pins; placing backing. material upon the said. guiding element and above the pins; placing a pin-shank receiving element. upon the said backing material; and effecting opposing relative movement between the pin-shank receiving element and the heads of the group of pins in a manner to enter the pins in spaced parallel relation in the opposing surface of the backing material. 7

5). In a method of applying pins to flexible backing material, the steps of freely suspending a group of headed pins in the perforated area of a pin assembling element; placing the said element in inverted-position, pin heads down, upon the correspondingly perforated area of a pin guiding element whereof the perforationsare in axial alignment, or substantially so, with those of the assembling element and whereof each perforation is of sufficient size in cross-section for the free passage of the head of a pin; supporting'the heads of the pins upon a base elernent;v temporarily securing the pins in the respective perforations of the guiding element; removing the assembling element free of the pins; placing backing material upon the said guiding elementand above the pins; placing a pin-shank receiving element upon the said backing mate rial; effecting opposing relative movement between the pin-shank receiving element and the heads of the group-of pins in a manner to enter the pins in spaced parallel relation in the opposing surface of the backing material; shifting the pin-shank receiving element and the guiding element to spaced. relation, and' stripping from the guiding element the backing material carrying. the pins.

6. The method of applying pins to flexible backing material, consisting in freely suspending a group of headed pins in the perforated area of a pin assembling element; placing the said element in inverted position, pin heads down, upon A the correspondingly perforated area of a pin guiding element whereof the perforations are in axial alignment, or substantially so, with those of the assembling element and whereof each perforation is of sufficient size in cross-section for the free passage of the head of a pin; supporting the heads of the pins upon a base element; temporarily securing. the pins in the respective perforations of the guiding element; removing the assembling element free of the pins; placing backing material upon the said guiding element and; above the pins; placing a pin-shank receiving, element upon the said backing material;.

effecting opposing relative movement between the pin-shank receiving element and the heads of the group of pins in a manner to enter the pins in spaced parallel relation in the opposing surface of the backing material; shifting the pinshank receiving element and the guiding element to spaced relation; stripping the backing material from the guiding element; removing the pin-shank receiving element and the imposed backing material and pins, and pressing the pins simultaneously through said backing material until the heads abut the backing material.

7. In an apparatus for applying headed pins to a flexible backing material, a pin guiding element having a perforated area adapted to support the backing material, the perforations being of sufficient size in c ross-section for the free passage: therethrough of the respective pins, heads downward, before the backing material is placeii on saidelement, said element including means for temporarily holding said pins in said perforations, base meansfor supporting the heads of pins sustained in said perforations, and means for movably supporting the pin guiding element inparallel relation to the base means.

' 8. In an apparatus for applying headed pins to a flexible backing material, a pin guiding element having a perforated area adapted to support the backing material, the perforations being of sufficient size in cross-section for the free passage therethrough of the respective pins, heads downward, before the backing material is placed on said element, said element including means for temporarily holding said pins in said perforations, base means for supporting the heads of pins sustained in said perforations, and means for resiliently supporting the pin guiding element in parallel relation to the base means, the last-named means comprising guide pins fixed to the pin guiding element and slidable in the base means, and supporting springs interposed between the said pin guiding element and. base means.

9. In an apparatus for applying headed pins to flexible backing material, a pin guiding element having a perforated area adapted to suppport the backing material, the perforations being of sufficient size in cross-section for the free passage therethrough of the respective pins, heads downward, before the backing material is placed on said element, said element including correspondingly perforated plate members in superposed relation and slidable relatively to each other so as to clamp or release the pins extending through the mating holes of the respective plates, as desired;

10. In an apparatus for applying headed pins toflexible backing material, a pin guiding element having a perforated area adapted to support the backing material, the perforations being of sufficient size in cross-section for the free passage therethrough of the respective pins, heads downward, before the backing material is placed on said element, said element including,

correspondingly perforated plate members. in superposed relation and slidable relatively to each other so as to clamp or release the pins extending through the mating holes of the respective plates as desired, base means for supporting the heads of the inverted pins sustained in said perforations; and means movably supporting said pin guiding element and base means in parallel relation. i 11. In an apparatus for applying headed pins to" flexible backing material, a pin guiding element having a perforated area adapted tcsupport the backing material, the perforations: being of sufficient size in cross-section for the free passage therethrough of the respective pins, heads downward, before the backing material is placed on said element, said element including a correspondingly perforated member which receives the shanks of pins and is operative to hold or release the pins in the said guiding element, as desired, base means for supporting the heads of the, pins sustained in said perforations, and means including a spring element for resiliently supporting said guiding element and base means in parallel relation.

12. In an apparatus for applying headed pins to flexible backing material, a pin guiding element having a perforated area adapted to support the backing material, the perforations being passage therethrough of the respective pins, heads downward, before the backing material is placed 1 on said element, said element comprising two plates fixed in spaced parallel relation and having correspondingly perforated areas whereof the perforations are in axial alignment, and also an intermediate slidable pin-holding plate having a correspondingly perforated area shiftable into and out of axial alignment with the perforations of the companion plates.

13. In an apparatus for applying headed pins to flexible backing material, a pin guiding ele ment having a perforated area adapted to support the backing material, the perforations being of sufficient size in cross-section for the free passage therethrough of the respective pins, heads downward, before the backing material is placed on said element, said element comprising two plates fixed in spaced parallel relation and having correspondingly perforated areas whereof the perforations are in axial alignment; and also having an intermediate slidable pin-holding plate W having a correspondingly perforated area shiftable into and out of axial alignment with the perforations of the companion plates, base means for supporting the heads of the pins sustained in the perforations of the respective plates, and

connections providing for a parallel movement between said base means and pin guiding element.

14. In an apparatus for applying headed pins to flexible backing material, a pin guiding element having a perforated area adapted to support the backing material, the perforations being of sufficient size in cross-section for the free passage therethrough of the respective pins, heads downward, before the backing material is placed on said element, said element comprising two plates fixed in spaced parallel relation and having correspondingly perforated areas whereof the perforations are in axial alignment, and also an intermediate slidable pin-holding plate having a correspondingly perforated area shiftable into and out of axial alignment with the perforations of the companion plates, base means for supporting the heads of the pins sustained in the perforations of the respective plates, and means including a spring element for resiliently supporting said guiding element in spaced parallel relation to the base means.

15. In an apparatus for applying headed pins to flexible backing material, a pin guiding element having a perforated area adapted to support the backing material, the perforations being of sufficient size in cross-section for the free passage therethrough of the respective pins, heads downward, before the backing material is placed rial.

on said element, said element including means for temporarily holding said pins in the perforations, base means for supporting the protruding heads of the pins, means supporting and guiding said base means in parallel relation to the said pin guiding element, and a pin shank receiving element adapted to be imposed on the backing material after such material has been placed on said pin guiding element.

.16. In an apparatus for applying headed pins to flexible backing material, a pin guiding element having a perforated area adapted to support the backing material, the perforations being of sufiicient size in cross-section for the free passage therethrough of the respective pins, heads downward, before the backing material is placed on said element, said element including means for temporarily holding said pins in the perforations, base means for supporting the protruding heads of the pins, means supporting and guiding said base means in parallel relation to the guiding element, a pin-shank receiving element adapted to be imposed on the backing material after such material has been placed on said pin guiding element, and a stripper for removing the adherent backing material from the opposing surface of the guiding element and maintaining the material upon the said pin-shank receiving element after the organization has been inverted and the points of the pins entered in the opposing surface of the backing material.

17. In an apparatus for applying headed pins to flexible backing material, a pin guiding element having a perforated area adapted to support the backing material, the perforations being of sufficient size in cross-section for the free passage therethrough of the respective pins, heads downward, before the backing material is placed on said element, said element including means for temporarily holding said pins in the perforations, base means for supporting the protruding heads of the pins, means supporting and guiding said base means in parallel relation to the pin guiding element, a pin-shank receiving element adapted to be imposed on the backing material after such material has been placed on said pin guiding element, and a stripper for removing the adherent backing material from the opposing surface of the pin guiding element and maintaining it upon the said pin-shank receiving element after the organization has been inverted and the points of the pins entered in the opposing surface of the backing material, said stripper comprising a series of spaced parallel legs insertable in and movable through registering apertures in the said base means and pin guiding element so as to bear upon the margins of the backing mate- JOHN MORRISON. 

